Last week, I had a surreal experience with Uber. It was mid-morning on Friday and I pushed a button to request an UberX as I walked out of Sightglass, the coffee shop deep in the South of Market district. When the car arrived a few minutes later, I got in. Without saying a word, the driver passed me his iPhone. Confused, I looked up from my emails and he mouthed to me, “I am deaf.